Light fixture base



FIG. 1 is a front elevation view of a light fixture base showing our new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top right perspective view thereof; and,

FIG. 8 is a bottom right perspective view thereof.

The broken lines showing portions of the light fixture base, as well as those showing other features of the light fixture, form no part of the claimed design. 

CLAIM The ornamental design for a light fixture base, as shown and described. 